Method for realizing online inspection and replacement of gas holder heat tracing system

Abstract

The invention relates to the field of maintenance and overhaul of POC gas holders, and in particular relates to a method for realizing online inspection and replacement of a gas holder heat tracing system. The method is characterized by comprising the steps of 1 transforming the gas holder heat tracing system: 1.1 dividing 4 to 6 groups of in-chamber heating pipe bodies, 1.2 building an in-chamberheating pipe integral lifting and replacing system, 1.3 building a heat tracing pipe segmented leakage detection system; and 2 carrying out online inspection and replacement on the gas holder heat tracing system. By the adoption of the structural improvement and the matched use method, the problem of leakage of an internal tracing pipe in the operation stage of a POC type gas holder is solved, the overhaul and maintenance time is saved, resources consumed by overhaul are reduced, capital is saved, the overhaul time is shortened, the gas discharge amount is reduced, and the remarkable effect is achieved.

Description

technical field [0001] The invention relates to the field of maintenance and repair of POC gas cabinets, in particular to a method for realizing on-line inspection and replacement of a heat tracing system of a gas cabinet. Background technique [0002] Since the first 100,000 m³ blast furnace gas tank in China was put into production in 1999, more than 200 POC gas tanks have been built and put into production. Compared with the MAN type gas holder, the POC type gas holder has faster operation speed, greater gas storage pressure and is easy to be large-scale, and is widely used to store coke oven and blast furnace gas. However, after the POC-type gas cabinets were put into production and operation in many places in northern my country, it was found that some gas cabinets had water overflow in the heating circulating water when they were not used for heating, and there was a hidden danger of gas backfilling the heating pipes. Because it was judged that the heating pipes in the...

AI Technical Summary

Problems solved by technology

However, after the POC-type gas cabinets were put into production and operation in many places in northern my country, it was found that some gas cabinets had water overflow in the heating circulating water when they were not used for heating, and there was a hidden danger of gas backfilling the heating pipes. Because it was judged that the heating pipes in the cabinets may have leaked In this case, the gas cabinet can only be shut down, the sealing oil is cleaned out of the cabinet, and after the water is unloaded, some heating pipes in the cabinet are repressed to detect leaks and repair welding of leaks.

This method is time-consuming and labor-intensive for the overall production, and it is difficult to find this problem in production, which poses a great safety hazard

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